Fountain-pen.



w. l.. finals. FOUNTAIN PEN. APPLICATION FIL-ED IIJNE 3. 1914.

UNITED sTATEs PATENT oEEIoE.

WILLIAM I. FE1-mls, or WEsTEIELD, NEW JERsEY, AssIGNoR 'ro L. WATERMANCOMPANY, OF NEW YORK, N. Y.,

A GOBIEOIRZA'IION 0F NEW YORK.

' FOUNTAIN-PEN.

Specification of Letters Patent.

Patented Oct. 17, 1916.

To all'whom t may concern:

Be it known that I, WILLIAM I. FERRIS, a citizen of the United States,residing at Westfield, in the county of Union and State of New Jersey,have invented a lnew and useful Improvement in Fountain-Pens.

This invention relates to improvements in fountain pens having /for itsobject theV lfree and continuous flow of ink from the reservoir alongthe feed bar to the metallic pen.

By means of my invention, the passage of ink along the feed bar iscontinuous, there being no noticeable diminution of the supply when abubble of air passes from the pen point into the reservoir. The reasonsfor this are: first, that the capillary fissures in the feed bar give aconstant limited supply of ink; and second, by the improved constructionof the feed bar, the ink in passing into the bar accelerates the airbubble, especially when it reaches the end of the bar, so that the airbubble passes through the feed bar rapidly and leaves the feed barWithout hesitation or clinging to the same.

My invention consists of a feed bar hav@ ing its inner end constructedso that the ink can all be taken from the reservoir to the last drop,and that air bubbles passing upward through the bar are given animpetus, thus causing them to clear the end of the feed bar and allowthe ink to flowto the metallic pen'without interruption.

By my invention, when the pen is not in awritinfr position, the surpluslink is with,- drawn fiom that portion of the feed bar which comes incontact with the metallic pen, thereby avoiding the possibility ofsweating or spilling ink within the cap. While the surplus ink is sowithdrawn and falls into the main supply of ink Within the reservoir,nevertheless, the recessed portion of the feed bar within the barrel ofthe pen retains a sufficient amount of ink to form a secondary inksupply available Ato keep the capillary plates and fissures of the feedbar moist when the-pen is inverted and not 1n use. The result is thatwhen the pen isl brought into a Writing position, even after aconsiderable period of disuse, the mk is fed immediately through thealready moist feed bar, andthe metallic pen writes instantlywhen touchedto paper. This 1s accomplished by the arrangement of the capillarysurfaces as shown in Fig. 8.

The old typeof feed bar 1s so constructed that an air bubble will seatitself on the reservolr end of the feed bar, thereby closing thechannel-for the ink and the air bubblel does not detach itself until`displaced by a sharp movement of the pen or by a succeedmg air bubble.l Y

The invention is illustrated in the accompanying drawings, in which-4Figure l is a side'view of my improved fountainvpen; Fig. 2 is a sectionof the lower end of a fountain pen made according to my invention, andFig.l 3 is a section on line 5-5 in Fig. 2; Fig. 4 is a top View andFig. 5 a side view of a feed bar used in my improved fountain pen; Fig.6 is a section on line 8-8 in Fig. 4; Fig-7 is a cross sec- -tion online 9-9 in Fig. 6; Fig.' 8 is a section in line with the metallic penin Fig. 2, the pen being shown in elevation.

In this specification, the pen point, which is usually made of metal,although it may be made of other material, will be called the metallicpen to differentiate it from the entire structure which is called a pen.

The pen is made of any suitable material and comprises a barrel 10forming a reservoir having a nozzle portion Which is preferably made inthe form of al nozzle 11 which screws into the barrel or reservoir andits inner face 12 forms the bottom of the reservoir. The feed bar 13fits in the perforation 14 of the barrel, the lower end 15 of the barbeing under the metallic pen 1'6 which is secured in the nozzle, usuallyby friction. The top of the feed bar has a vof same, the groove actingas a channel for the ink passing down and for the air bubbles 18 whichpass up from the metallic pen to the reservoir. The feed bar is alsoprovided with fissures 19, these issuresbeing disposed in any convenientmanner, preferably, however, on each side of the groove 17 and havingagreater depth than the groove. These fissures, by their capillaryaction, -make the passage of ink positive and arenot cloggedv by theair. The feed bar extends within the reservoir, the extension 20 havinga cutaway portion 21 at the bottom at the back end of the feed bar. Thisforms an overhang- 22 which, withthe wall of the reservoir, forms a.secondary reservoir or chamber 23. The reservoir end of this feed bar isslightly concave at 25. The fissures 19 are cut through the bar in theback part of the -pen is shaken or it is succeeded by another air bubbleand thus blocking vthe entrance of ink into the feed bar.

In my improved pen, the bubble, whenit passes .above the secondaryreservoir 23,

- passes directly from the-end of the feed bar end thereof .to vproducea concave surface as at b in Fig. 2. .The ink in the supplemen-- talreservoirl 23 passes through the compara tively shallow fissures orducts 24 and coming up into the channel 17 gives an impetus to thebubble and Iit passes from the inner end "of the feed bar quickly anddoes not cause any appreciable cessation of iiow of the ink. Theintroduction of ink in the rear of the bubble takes place in the feedbar and within the reservoir, the ink in the secondary reservoir beingdirected mainly behind overhang 22 to' resist the expenditure of thepressure of the ink back into the reservoir 10. Having now described myinvention, what I claim is` l. Afeed bar for fountain pens having agroove in its top face and having fissures extending along its top edge,the fissures being deepened to extend through the bar at the rearportion thereof, lthe bar being `cut away near the 'rear to decrease thedepth of the ssures and provide a downwardly projectling' overhang:

42. In a fountain pen, a feed bar having a groove at the top thereof toform a channel for both air and ink, said channel extending to the rearend'of the feed bar, the feed bar having its under side cut away nearthe back with a rear overhang, the feed bar having v capillary fissuresextending from the groove to the bottom of thebar at the cut away 45portion.

3. A feed bar for fountain pens having a groove on its top surface, thegroove providing a channel for ink and air, the groove extending to theback end of the bar, the bar being cut away at the bottom near its backend to form an overhang at the back,

Athe bar having capillary fissures in communication with the groove,said fissures eX- tending to the bottom of the bar'at the back end ofthe bar, the fissures thereby forming ducts for the passage of ink, saidducts being. reduced in depth at the cut away portion.

- 4. A feed bar for fountain pens having a groove in its top face andhaving fissures ex# tending along its top edge, the fissures beingdeepened to extend through the bar at the -rear portion thereof, thebar'being cut away near the rear to decrease the depth of the fissuresand provide' a downwardly projecting overhang, the bar being cut away atthe rear end to form-a concave depression. the bubble on account of thetendency of the 5. A feed bar for fountain pens having a lng a channelfor ink and air,rthe groove extending to the back end of the bar, thebar being cut away at the bottom near its back v end to form an overhangat/the back, the bar having capillary fissures in communication with thegroove, saidA fissures extending to the bottom of the bar at the backend of the bar, the ssures thereby forming ducts for the passage of ink,said ducts being reduced in depth at the out away portion, the bar beingout away at its inner extremity to form 8O a concave chamber.

In testimony whereof I have signed my 'nameto this specification in thepresence of two subscribing witnesses.

WILLIAM I. FERRIS. 1 Witnesses: v Y

VALTrfRANDLL, y

ImfIN'G E. JENNINGS.

